Home / 5,211.64-7,192.12-2,853.72

Finding the Fourth Proportional to 5,211.64, 7,192.12 and 2,853.72

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Solution

The fourth proportional to 5,211.64, 7,192.12 and 2,853.72 is: 3,938.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.64 : 7,192.12 = 2,853.72 : x
  2. Step 2: Convert to fraction form
    5,211.64/7,192.12 = 2,853.72/x
  3. Step 3: Cross multiply
    5,211.64x = 7,192.12 × 2,853.72
  4. Step 4: Simplify right side
    5,211.64x = 20,524,296.69
  5. Step 5: Solve for x
    x = 20,524,296.69/5,211.64
  6. Step 6: Final answer
    x = 3,938.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.